| 摘要 |
The hot water storage tank has an adjustable hot water storage capacity. The hot water storage tank may comprise five chambers fluidly connected with one another in series, each chamber having a 35 litre capacity. The hot water storage tank may also comprise a cold water inlet in a lowermost of the five chambers and a hot water outlet in an uppermost of the five chambers. The chambers may also be arranged horizontally. Each chamber may contain a respective heating coil (A-E), wherein each heating coil is connected to a boiler via solenoid or manual valves 1-5. Water heated by the boiler may pass through selected heating coils so as to heat water in the respective chamber. By controlling which valves are open, the hot water storage tank can provide different volumes of heated water for use in domestic hot water supply. The hot water tank therefore saves energy when compared with large tanks used in domestic houses having a small requirement for heated water, since less water need be heated. Since any water entering the tank is eventually heated, the hot water tank also prevents Legionella.
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